SIG-Sauer P226 Elite

During a raid in "Ohuna" (S3E07), Lieutenant Commander Steve McGarrett (Alex O'Loughlin) is briefly seen holding a SIG-Sauer P226 Elite (noted by the beavertail and front slide serrations) rather than his SIG-Sauer P226 Navy, but it returns to the Navy model in the next shot.

SIG-Sauer P226 Elite - 9x19mm

In "Ohuna" (S3E07), McGarrett holding the P226 Elite (noted by the beavertail and front slide serrations) rather than his SIG-Sauer P226 Navy, but it returns to the Navy model in the next shot.

Rearview of the SIG's beavertail in "Ohuna" (S3E07).

SIG-Sauer P229R

Chin Ho Kelly (Daniel Dae Kim) continues to carry a SIG-Sauer P229R as his sidearm in Season 3, occasionally fitted with a Surefire X300 weaponlight. A DAK variant appears as the sidearm carried by members of US Coast Guard in "Lana I Ka Moana" (S3E03). Interestingly, the pistol has a UID label, which brings up the possibility of it being a true Coast Guard sidearm.

In Season 3's premiere "La O Na Makuahine" (S3E01), Lt. Catherine Rollins (Michelle Borth) is seen giving what appears to be a two-tone SIG-Sauer P238 pistol to Doris McGarrett (Christine Lahti), who does a brass check.

Heckler & Koch P30

Danno with the P30 after watching a wounded art gallery robber collapse in "Kanalua" (S3E02). "What did you do?"

Good closeup of Danno's P30 in "Mohai" (S3E05).

Danno opens fire on Hassan with his P30 in "I Ka Wa Mamua" (S3E06).

Danno holding the P30 after killing Hasan in "I Ka Wa Mamua" (S3E06).

Danno aims the P30 at a taxi containing a murder suspect in "Wahineʻinoloa" (S3E08).

Heckler & Koch USP

Danno finds a fired Heckler & Koch USP in "Kahu" (S3E11). A USP with a two-tone slide is pulled by Michael Noshimuri (Daniel Henney) in the Season 3 finale "Aloha, Malama Pono" (S3E24).

Heckler & Koch USP 9x19mm

Danno finds a recently fired USP in "Kahu" (S3E11).

Heckler & Koch USP with two-tone finish - 9x19mm

A USP with a two-tone slide is pulled by Michael Noshimuri (Daniel Henney) in the Season 3 finale "Aloha, Malama Pono" (S3E24).

Heckler & Koch P2000

In "La O Na Makuahine" (S3E01), Wo Fat (Mark Dacascos) appears to be armed with a suppressed Heckler & Koch P2000 when confronting Doris McGarrett in the safehouse. He also uses it again without a suppressor in "Hana I WaʻIa" (S3E14).

Smith & Wesson 4506

In "Kekoa" (S3E16), a Smith & Wesson 4506 was used by the killer and left in the trunk of the car at the beginning of the episode.

Early model Smith & Wesson 4506 - .45 ACP.

In "Kekoa" (S3E16), a Smith & Wesson 4506 was used by the killer and left in the trunk of the car at the beginning of the episode.

Smith & Wesson 5906

The Smith & Wesson 5906 continues to be the sidearm carried by officers of the Honolulu Police Department including Sgt. Duke Lukela (Dennis Chun). Helen Tilton (Lee Meriwether) uses one after she kills an HPD officer by snatching it out his duty holster and firing the pistol at his chest.

Smith & Wesson 5906 - 9x19mm.

An HPD officer opens fire with his S&W in "Kanalua" (S3E02).

The 5906 at the left hand of Helen Tilton's corpse in "Mohai" (S3E05).

Glock 17

Gil Scates (Todd Stashwick) is seen pulling a Glock 17 and forcing Steve and Danny to jump ship in "Lana I Ka Moana" (S3E03). They are also seen in "He Welo ʻOihana" (S3E23).

Glock 17 - 9x19mm

Gil Scates (Todd Stashwick) is seen pulling a Glock 17 and forcing Steve and Danny to jump ship in "Lana I Ka Moana" (S3E03).

One of Tyler Kane's guards holds a Glock 17 on McGarrett in "He Welo ʻOihana" (S3E23).

Another one of Kane's guards holds a Glock 17 on Doris McGarrett in "He Welo ʻOihana" (S3E23).

Glock 19

In "Wahineʻinoloa" (S3E08), US Marshals Service WITSEC Agent Chris Channing (Carlos Bernard) is seen drawing a Glock 19 as his sidearm. Lt. Catherine Rollins (Michelle Borth) is also seen holding the pistol.

Glock 19 (3rd Generation) - 9x19mm

In "Wahineʻinoloa" (S3E08), WITSEC Agent Chris Channing (Carlos Bernard) is seen drawing a Glock 19 as his sidearm.

Lt. Catherine Rollins (Michelle Borth) is also seen holding the pistol in "Wahineʻinoloa" (S3E08).

Beretta 92FS

Ex-mob assassin Martin Cordova (C. Thomas Howell) carries a Beretta 92FS as his weapon of choice in "Ha'awe Make Loa" (S3E09). McGarrett clears a 92FS found off a dead man in "Kahu" (S3E11),

Beretta 92FS - 9x19mm

Martin Cordova (C. Thomas Howell) aims his 92FS at McGarrett after taking him hostage in "Ha'awe Make Loa" (S3E09).

Cordova aims the 92FS at his temple after McGarrett refuses to put him out of his misery due to his cancer condition in "Ha'awe Make Loa" (S3E09).

McGarrett picks up a recently fired 92FS before he starts to clear it in "Kahu" (S3E11).

A Yakuza hitman holds the 92FS on Kono in "Hoʻopio" (S3E22).

Beretta 92FS Inox

A Yakuza Hitman uses a Beretta 92FS Inox to shoot a security guard and Kono in "He Welo ʻOihana" (S3E23)

Smith & Wesson Model 36

In "Kanalua" (S3E02), McGarrett shows August March (Ed Asner) the Smith & Wesson Model 36 that was used in a murder seen in Season 2's "Kalele" (S2E19). Asner actually played the role of March in Season 8 of the original Hawaii Five-O.

Smith & Wesson Model 40 (Nickel)

Michael Noshimuri (Daniel Henney) hands what appears to be a nickel Smith & Wesson Model 40 to his brother in the Season 3 finale "Aloha, Malama Pono" (S3E24). Michael identifies the revolver as an "S-W J-Frame".

Double-Barreled Shotgun (Sawed-off)

Kong Liang (Russell Wong) holds the sawed off double barrel while warning McGarrett and Danno to back off or another shot will be fired in "Ohuna" (S3E07).

Ithaca 37

In "Hookman" (S3E15), one of the gunmen in an armed robbery seen in a flashback is armed with an Ithaca 37 shotgun.

Ithaca 37 - 12 ga.

In "Hookman" (S3E15), one of the gunmen in an armed robbery seen in a flashback is armed with an Ithaca 37 shotgun.

Remington 870 Express Tactical

In "Ohuna" (S3E07), a Remington 870 Express Tactical shotgun is held by a a White Fire contractor during a hostage situation. This shotgun is fitted with an extended magazine tube, pistol grip, door breacher muzzle brake, and collapsible KNOXX SpecOps NRS stock. Kono uses this Remington to fire beanbag rounds and fitted with a Picatinny rail during the prison rescue in "Olelo HoʻOpaʻI Make" (S3E13).

A White Fire contractor aiming his shotgun at hostages in "Ohuna" (S3E07).

IMI Mini-Uzi

A Mini Uzi is used by one of Delano's men in "La O Na Makuahine" (S3E01).

In "La O Na Makuahine" (S3E01), one of Delano's men opens fire with a Mini Uzi.

Ingram MAC-10

A MAC-10 is seen in the safe in the Season 3 finale "Aloha, Malama Pono" (S3E23).

A MAC-10 is seen in the safe in the Season 3 finale "Aloha, Malama Pono" (S3E23).

Intratec TEC-9

The Intratec TEC-9 is held by one of the drug dealer's henchmen in "Hoa Pili" (S3E19).

Intratec TEC-9. - 9x19mm.

The Intratec TEC-9 is held by one of the drug dealer's henchmen in "Hoa Pili" (S3E19).

Smith & Wesson 76

A Smith & Wesson 76 is used by one of Delano's men in "La O Na Makuahine" (S3E01). In "Hookman" (S3E15), one of the gunmen in an armed robbery seen in a flashback is armed with the Smith & Wesson 76.

SIG SG 552 - 9x19mm

In "La O Na Makuahine" (S3E01), one of Delano's men opens fire with a Smith & Wesson 76. Note that this shot is reversed as indicated by the sling loops being visible, the stock appearing to fold incorrectly to the right side of the weapon, and the ejection port not being visible.

In "Hookman" (S3E15), one of the gunmen in an armed robbery seen in a flashback is armed with the Smith & Wesson 76.

Colt 9mm SMG

In "Paʻani" (S3E17), players in a milsim game are seen using Colt 9mm submachine guns modified to fire paintballs. The Colt rifles are most likely actual blank-firing guns or replicas as Simunition guns don't produce muzzle flashes, though they do sound like real gun shots, which works for the purpose of the episode.

AKMS

A Delano henchman (Left) on a boat armed with a AKMS in "La O Na Makuahine" (S3E01).

A guard armed with an AKMS and what appears to be a 75-round magazine in "Kanalua" (S3E02).

McGarrett carries an AKMS while in North Korea in "Olelo Paʻa" (S3E20).

AKMSU

A White Fire contractor is armed with an AKMSU fitted with black synthetic furniture in "Ohuna" (S3E07). In "Paʻani" (S3E17), players use AKMSU-style rifles that fired paintball rounds but since they all produce muzzle flashes, they are most likely either blank-firing weapons or replicas with the flashes added via CGI.

AKMSU - 7.62x39mm

A White Fire contractor takes aim with the AKMSU at hostages in "Ohuna" (S3E07).

The unmasked contractor about to fire the AKMSU at Chin Ho in "Ohuna" (S3E07).

Wilson aiming the M4A1 at a downed McGarrett in a chicken wing pose. (S3E10)

US soldiers are armed with the M4A1 in the Korean DMZ in "Olelo Paʻa" (S3E20).

Steve carries a tan-painted M4 while serving as a SEAL in Iraq in "Olelo Paʻa" (S3E20).

Colt Model 933

Danno continues to carry the Colt Model 933 fitted with an EOTech sight and vertical grip while conducting raids with the team. Chin Ho also uses one in "Ohuna" (S3E07) during a rescue mission to save Kono.

Colt AR-15A2 Government Carbine

HPD SWAT officers conducting VIP protection at Honolulu International Airport in "La O Na Makuahine" (S3E01). You can see the tactical light mounted on the foregrip.

Heckler & Koch HK416

In a flashback to his time as an active Navy SEAL, Steve carries a Heckler & Koch HK416 during a mission in North Korea in "Olelo Paʻa" (S3E20). As this episode was a direct prequel to Season 1's "Pilot", McGarrett's HK416 was set up almost identically to the one he carried in that episode (NOTE: In the Pilot, Steve's HK416 was fitted with an EOTech 551 and had an under-barrel laser; in this episode, the HK416 has no under-barrel laser, and the EOTech sight on the weapon is an XPS, not a -551).

Heckler & Koch HK416 with 10 inch barrel, 5.56x45mm NATO

In a flashback to his time as an active Navy SEAL, Steve carries a Heckler & Koch HK416 during a mission in North Korea in "Olelo Paʻa" (S3E20).

McGarrett with the HK416 in "Olelo Paʻa" (S3E20).

McGarrett fires the HK416 in "Olelo Paʻa" (S3E20). As this episode was a direct prequel to Season 1's "Pilot", the HK416 was set up similarly to the one McGarrett carried in that episode, though note that the armorer made some configuration errors (in the Pilot, the Hk416 had an EOTech 551 and under-barrel laser, while in this episode, it features an EOTech XPS and no laser).

IMI Galil MAR

A White Fox contractor is armed with an IMI Galil MAR assault carbine in "Ohuna" (S3E07). One is seen in Sean Winston's South African profile in the same episode. An NLM terrorist carried the Galil MAR with in "Aloha, Malama Pono" (S3E24).

IMI Galil MAR - 5.56x45mm

A White Fox contractor armed with the Galil MAR in "Ohuna". Note the magazines taped together jungle style. (S3E07)

The Micro Galil is seen in Sean Winston's South African profile in "Ohuna". (S3E07)

A White Fox contractor aiming the Galil MAR at the hostages in "Ohuna". (S3E07)

An NLM terrorist with the Galil MAR in "Aloha, Malama Pono" (S3E24).

Noveske Rifleworks Diplomat

McGarrett continues to carry the Noveske Rifleworks Diplomat while conducting raids with the team. His rifle has an Aimpoint T-1 red dot with a magnifier scope, AN/PEQ-15 laser designator, vertical foregrip, and Surefire-made 60-round magazines or Magpul-made 30-round PMAGs.

Mk 12 Mod 0 Special Purpose Rifle

What appears to be a Mk 12 Mod 0 Special Purpose Rifle is used by Danno in "Hana I WaʻIa" (S3E14). The flash hider is wrong for a real Mk 12 as it looks to be a regular birdcage. The rifle also is fitted with a 60 round Surefire mag, a Magpul PRS stock, AN/PEQ-15 laser designator, brass catcher and a C-MORE Systems sight.